A 30g bowl of Sainsbury's Nut & Maple Flavour Porridge Pot contains 116 kcal, 6.2g of sugar (4.1g of free sugar), 1.3g of fibre and 6.5g of protein. With 125ml of semi-skimmed milk the bowl comes to 175 kcal and 12.1g of total sugar. It is classed as NOVA 4 (ultra-processed).
Of the 20.6g of sugar per 100g in Nut & Maple Flavour Porridge Pot, Boone counts 13.6g as free sugar. The rest (7.0g) is lactose from milk powder and whey, which the NHS limit does not count. Method: total sugar less 7.0g lactose from milk powder and whey (lactose estimated from the ingredient proportions).
Nut & Maple Flavour Porridge Pot is classed as NOVA 4, ultra-processed, because its ingredients include whey, sugar syrup powder and flavouring. These are industrial ingredients you would not use in a home kitchen. 3 of its 9 ingredients are of this kind.
Boone classifies processing from the published ingredient list using the NOVA system. Added vitamins and minerals are not counted as a marker of ultra-processing.